几个UIAlertViews代表 [英] Several UIAlertViews for a delegate

问题描述

目前，我有一个类在这里和那里弹出 UIAlertView 。目前，同一类是这些代表（这是合乎逻辑的）。不幸的是，这些 UIAlertView 将调用该类的相同代理方法。现在，问题是 - 你如何知道从哪个警报视图调用委托方法？我正在考虑只是检查警报视图的标题，但那不是那么优雅。什么是最优雅的方式来处理几个 UIAlertView s？

Currently I've got a class popping up UIAlertViews here and there. Currently, the same class is the delegate for these (it's very logical that it would be). Unfortunately, these UIAlertViews will call the same delegate methods of the class. Now, the question is - how do you know from which alert view a delegate method is invoked? I was thinking of just checking the title of the alert view, but that isn't so elegant. What's the most elegant way to handle several UIAlertViews?

推荐答案

标签 UIAlertView 这样：

#define kAlertViewOne 1
#define kAlertViewTwo 2

UIAlertView *alertView1 = [[UIAlertView alloc] init...
alertView1.tag = kAlertViewOne;

UIAlertView *alertView2 = [[UIAlertView alloc] init...
alertView2.tag = kAlertViewTwo;

然后在使用这些标签的委托方法中区分它们：

and then differentiate between them in the delegate methods using these tags:

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
    if(alertView.tag == kAlertViewOne) {
        // ...
    } else if(alertView.tag == kAlertViewTwo) {
        // ...
    }
}

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